distributor springs

looking to curve the distributor to around 2200-2600 rpms for the street, built 318 302 heads, 9.5:1 compression, a-904, 3:55 gears....mp340 camshaft....air gap intake, headers, rtc.
now, i have it apart. has two spring the light one factory and the loop spring heavy one.
when orange ecu box came with some mopar really light springs, feels almost too light to me, pondering what to do. have read use 1 factory light spring, (non loop) and one m/p light spring, but feels too light, any one dealt with what works best for the street? to get into the ball park? they gave me #p2932675 by the way...